adj. sights

1.Which centerfire models are small frames? 2. Were the .32 Cals. all built on the same frame as the .38s? I have seen model 741's, and model 76 (T.G.) listed w/3" barrels and adjustable sights. My eyesight isn't what it used to be, and the Adj. sights aid in accurate shooting. If the .32's...